126 lines
5.0 KiB
TypeScript
126 lines
5.0 KiB
TypeScript
"use strict";
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/*
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* Copyright (C) 1998-2017 by Northwoods Software Corporation. All Rights Reserved.
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*/
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import * as go from "../release/go";
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// A "HyperlinkText" is either a TextBlock or a Panel containing a TextBlock that when clicked
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// opens a new browser window with a given or computed URL.
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// When the user's mouse passes over a "HyperlinkText", the text is underlined.
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// When the mouse hovers over a "HyperlinkText", it shows a tooltip that displays the URL.
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// This "HyperlinkText" builder is not pre-defined in the GoJS library, so you will need to load this definition.
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// Typical usages:
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// $("HyperlinkText", "https://gojs.net", "Visit GoJS")
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//
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// $("HyperlinkText",
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// function(node) { return "https://gojs.net/" + node.data.version; },
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// function(node) { return "Visit GoJS version " + node.data.version; })
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//
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// $("HyperlinkText",
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// function(node) { return "https://gojs.net/" + node.data.version; },
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// $(go.Panel, "Auto",
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// $(go.Shape, ...),
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// $(go.TextBlock, ...)
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// )
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// )
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// The first argument to the "HyperlinkText" builder should be either the URL string or a function
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// that takes the data-bound Panel and returns the URL string.
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// The second argument to the "HyperlinkText" builder may be either a string to display in a TextBlock,
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// or a function that takes the data-bound Panel and returns the string to display in a TextBlock.
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// If no text string or function is provided, it assumes all of the arguments are used to
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// define the visual tree for the "HyperlinkText", in the normal fashion for a Panel.
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// The result is either a TextBlock or a Panel.
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go.GraphObject.defineBuilder("HyperlinkText", (args) => {
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// the URL is required as the first argument, either a string or a side-effect-free function returning a string
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var url = go.GraphObject.takeBuilderArgument(args, undefined, (x) => { return typeof x === "string" || typeof x === "function"; });
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// the text for the HyperlinkText is the optional second argument, either a string or a side-effect-free function returning a string
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var text = go.GraphObject.takeBuilderArgument(args, null, (x) => { return typeof x === "string" || typeof x === "function"; });
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// see if the visual tree is supplied in the arguments to the "HyperlinkText"
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var anyGraphObjects = false;
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for (var i = 0; i < args.length; i++) {
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var a = args[i];
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if (a && a instanceof go.GraphObject) anyGraphObjects = true;
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}
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// define the click behavior
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var click =
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(e: go.InputEvent, obj: go.TextBlock) => {
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var url = (<any>obj)["_url"];
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if (typeof url === "function") url = url(obj.findTemplateBinder());
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window.open(url, "_blank");
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};
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// define the tooltip
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var tooltip =
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go.GraphObject.make(go.Adornment, "Auto",
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go.GraphObject.make(go.Shape, { fill: "#EFEFCC" }),
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go.GraphObject.make(go.TextBlock, { margin: 4 },
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new go.Binding("text", "", (obj) => {
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// here OBJ will be in the Adornment, need to get the HyperlinkText/TextBlock
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obj = obj.part.adornedObject;
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var url = obj._url;
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if (typeof url === "function") url = url(obj.findTemplateBinder());
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return url;
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}).ofObject())
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);
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// if the text is provided, use a new TextBlock; otherwise assume the TextBlock is provided
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if (typeof (text) === "string" || typeof (text) === "function" || !anyGraphObjects) {
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if (text === null && typeof (url) === "string") text = url;
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var tb = go.GraphObject.make(go.TextBlock,
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{
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"_url": url,
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cursor: "pointer",
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mouseEnter: (e: go.InputEvent, obj: go.TextBlock) => { obj.isUnderline = true; },
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mouseLeave: (e: go.InputEvent, obj: go.TextBlock) => { obj.isUnderline = false; },
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click: click, // defined above
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toolTip: tooltip // shared by all HyperlinkText textblocks
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}
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);
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if (typeof (text) === "string") {
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tb.text = text;
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} else if (typeof (text) === "function") {
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tb.bind(new go.Binding("text", "", text).ofObject())
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} else if (typeof (url) === "function") {
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tb.bind(new go.Binding("text", "", url).ofObject())
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}
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return tb;
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} else {
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findTextBlock(args)
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return go.GraphObject.make(go.Panel,
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{
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"_url": url,
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cursor: "pointer",
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mouseEnter: (e: go.InputEvent, panel: go.Panel) => {
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var tb = findTextBlock(panel);
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if (tb !== null) tb.isUnderline = true;
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},
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mouseLeave: (e: go.InputEvent, panel: go.Panel) => {
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var tb = findTextBlock(panel);
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if (tb !== null) tb.isUnderline = false;
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},
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click: click, // defined above
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toolTip: tooltip // shared by all HyperlinkText panels
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}
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);
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}
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});
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function findTextBlock(obj: Object): go.TextBlock {
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if (obj instanceof go.TextBlock) return obj;
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if (obj instanceof go.Panel) {
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var it = obj.elements;
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while (it.next()) {
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var result = findTextBlock(it.value);
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if (result !== null) return result;
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}
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}
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return null;
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} |